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Science Assement
N/A
23
Science
8th Grade
02/12/2013

Additional Science Flashcards

 


 

Cards

Term
Define Mass
Definition
the amount of matter in an object. objects mass doesn't change.
Term
Explain Gravity
Definition
The attraction between all objects that is due to their masses.
Term
What is Force?
Definition
Push or pull of an object.
Term
Determine resultant force?
Definition
 refers to the reduction of a system of forces acting on a body to a single force and an associated torque.
Term
What is centripetal force?
Definition
acceleration that occers in a circular motion. objects that move in a circular motion are always accelerating because direction is always changing.
Term
1st law of Motion
Definition
An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an unbalanced force.
Term
2nd Law of Motion
Definition
The acceleration of an object depends on the mass of the object and the amount of force applied.
Term
3rd Law of Motion
Definition
For every action there is an equal and opposite reation. All forces act in pairs.
Term
Inertia
Definition
a tendency of all objects to resist any change in motion.
Term
Momentum
Definition
momentum depends on mass and velocity
Term
Motion
Definition
is a changed in postion measure by distance and time.
Term
Speed
Definition
tells us the rate at which an object moves.
Term
Velocity
Definition
tells the speed and direction of a moving object
Term
Acceleration
Definition
tells the rate, speed, or direction changes
Term
What is weight?
Definition
The force of gravity on an person or object on the surface of a planet. weight changes when gravitational force changes.
Term
How do you calculate distance?
Definition
D=ST
Term
How do you calculate time?
Definition
T=D/S
Term
What does KM, MI, M, FT. represent?
Definition
Distance
Term
What does hours, sec, min. reprent?
Definition
time
Term
What does M/S,CM/MIN/SEC, KM/HR/SEC represent?
Definition
Acceleration
Term
Formula for acceleration?
Definition

acceleration = final velocity - initial velocity

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 Time

Term
weight to mass
Definition
divide by 9.8
Term
mass to weight
Definition
multiply by 9.8
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